1) Using a Symbol SPT1800 Docked in a Symbol Cradle (Model # CRD1700-1000M-1)
2) ATA 186/188 running Firmware ATA030203SCCP051201A.zup.
3) Call Manager Version 4.1(3)sr4d
Cannot get a connection with Symbol SPT1800 Docked in the Cradle and attached to ATA186 or ATA188 to the device on the other end. Unit dials fine and tries to establish a handshake with the device on the other end but is never successful. Modem handshake tones sound funny/not normal.
All works fine and sounds normal with the same Symbol SPT1800 and Cradle when connected to POTS line from telephone company.
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for SCCP (version 3.0)
[Edit] What I forgot to mention is that it's basically the same if you are using a fax or a modem. Try setting it for Fax mode, i.e. G.711-only device so there will be no manipulation of the tones the modem (or fax) sends. Also set your modem for 9600 bps.
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